How to get the smallest difference(Array)

Question

Shivam Prasad 2017-8-31

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/354671-how-to-get-the-smallest-difference-array

编辑： Cedric 2017-9-17

>>The issue i'm having is that if there are two values of equal difference only the closest one is displayed. Can someone please correct my coding.

function[smallestPosition] = FindSmallestElevationChange(i,B)

E = [ 3 6 5 4 7 8 3 ; 5 7 6 2 3 1 7 ; 6 8 5 8 5 4 8 ; 7 4 9 7 6 5 3 ];

 *%B = 3 adjacent values e.g.. if I chose E(10), B = [ 4 2 8 ]
 %the smallest difference should be 4 and 8 which is (1 and 3) respectively
 %since there is a difference of 2 for both of them.*
   E(i);

[c index] = min(abs(B-E(i)));

the output given is only 1(which is 4)

[REVERTED, was edited away by the OP, Jan]

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Cedric 2017-9-17

编辑：Cedric 2017-9-17

Shivam Prasad, the least you can do if you don't need help anymore, is to accept the answer of whoever was nice enough to give you freely part of his/her time.

I accepted the answer from José-Luis (before Jan restored the original question and answered).

The question was originally titled "How to get the smallest difference(Array)" and it had the following picture attached:

Jan 2017-9-17

编辑：Jan 2017-9-17

I have reverted the question. Please, Shivam Prasad, do not remove the question after somebody has spent the time to provide an answer.

See also: https://www.mathworks.com/matlabcentral/answers/355515-this-function-is-supposed-to-output-smallestposition-1-3-when-given-smallestposition-findsma

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Answer 1

José-Luis 2017-8-31

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/354671-how-to-get-the-smallest-difference-array#answer_279804

在 MATLAB Online 中打开

bla = randi(50,10);
val = 25;
result = abs(bla-val);
result = result == min(result(:));
[xx,yy] = ndgrid(1:size(bla,1),1:size(bla,2));
idx_x = xx(result)
idx_y = yy(result)